Closed ypwangreg closed 1 year ago
sergev
commented
1 year ago File boot-meb2.hex is not needed, as there is no bootloader on the MEB-II board. Here is a command to start it:
qemu-system-mipsel -machine pic32mz-meb2 \
-nographic \
-monitor none \
-serial stdio \
-net nic \
-net tap,ifname=tap0,script=no,downscript=no \
-kernel vmunix.hex \
-sd litebsd.img
ypwangreg
commented
1 year ago Hi Sergev,
Thanks for the reply. I tried and it did not work somehow.
ubuntu@ubuntu:~/pic32mz$ ifconfig tap0
tap0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 20.2.2.2 netmask 255.0.0.0 broadcast 20.255.255.255
inet6 fe80::d478:aff:fe5c:c744 prefixlen 64 scopeid 0x20<link>
ether d6:78:0a:5c:c7:44 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 23 bytes 1946 (1.9 KB)
TX errors 0 dropped 4 overruns 0 carrier 0 collisions 0
ubuntu@ubuntu:~/pic32mz$ cat run_meb2.sh
# -net nic -net user \
/usr/local/qemu-mips/bin/qemu-system-mipsel -machine pic32mz-meb2 \
-nographic \
-monitor none \
-serial stdio \
-net nic \
-net tap,ifname=tap0,script=no,downscript=no \
-kernel vmunix.hex \
-sd litebsd.img
ubuntu@ubuntu:~/pic32mz$ sh run_meb2.sh
Board: Microchip MEB-II
Processor: microAptivP
RAM size: 512 kbytes
Load file: 'vmunix.hex', 522408 bytes
Card0 image 'litebsd.img', 339969 kbytesI did a tcpdump and it seems that there was some activities on tap0 so maybe the issue was I can't access the 'console' somehow?
ubuntu@ubuntu:~$ sudo tcpdump -i tap0 -nx
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on tap0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
19:30:19.303010 IP6 fe80::d478:aff:fe5c:c744 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
0x0000: 6000 0000 0024 0001 fe80 0000 0000 0000
0x0010: d478 0aff fe5c c744 ff02 0000 0000 0000
0x0020: 0000 0000 0000 0016 3a00 0502 0000 0100
0x0030: 8f00 044f 0000 0001 0400 0000 ff02 0000
0x0040: 0000 0000 0000 0001 ff5c c744
19:30:19.335000 IP6 fe80::d478:aff:fe5c:c744 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
0x0000: 6000 0000 0024 0001 fe80 0000 0000 0000
0x0010: d478 0aff fe5c c744 ff02 0000 0000 0000
0x0020: 0000 0000 0000 0016 3a00 0502 0000 0100
0x0030: 8f00 044f 0000 0001 0400 0000 ff02 0000
0x0040: 0000 0000 0000 0001 ff5c c744LiteBSD on WireFire works like a charm but not MEB2. same vmunix.hex and litebsd..
ubuntu@ubuntu:~/pic32mz$ sh run_wifire.sh
Board: chipKIT WiFire
Processor: microAptivP
RAM size: 512 kbytes
Load file: 'boot-wifire.hex', 6916 bytes
Load file: 'vmunix.hex', 522408 bytes
Card0 image 'litebsd.img', 339969 kbytes
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
4.4BSD-Lite build 13 compiled 2015-01-20
sergev@ubuntu-sergev:LiteBSD/sys/compile/WIFIRE.pic32
cpu: PIC32MZ2048ECG100 rev A4, 200 MHz
oscillator: system PLL div 1:6 mult x50
real mem = 512 kbytes
avail mem = 344 kbytes
using 18 buffers containing 73728 bytes of memory
spi1 at pins sdi=D14/sdo=C1/sck=D1
spi2 at pins sdi=F0/sdo=D11/sck=G6
spi3 at pins sdi=B10/sdo=C4/sck=B14
spi4 at pins sdi=F5/sdo=G0/sck=D10
uart1 at pins rx=F1/tx=D15, interrupts 112/113/114
uart4 at pins rx=F2/tx=F8, interrupts 170/171/172, console
sd0 at port spi3, pin cs=C3
sd0: type I, size 339968 kbytes, speed 12 Mbit/sec
sd0a: partition type b7, sector 2, size 204800 kbytes
sd0b: partition type b8, sector 409602, size 32768 kbytes
sd0c: partition type b7, sector 475138, size 102400 kbytes
bpf: sl0 attached
bpf: lo0 attached
WARNING: preposterous clock chip time -- CHECK AND RESET THE DATE!
starting file system checks.
/dev/rsd0a: file system is clean; not checking
starting network
clearing /tmp
standard daemons: update.
Wed Dec 10 21:07:39 PST 2014
4.4BSD-Lite (bsd.net) (tty4)
login: root
Last login: Wed Dec 10 21:07:35 on tty4
Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994
The Regents of the University of California. All rights reserved.
4.4BSD-Lite UNIX #1: Fri Apr 01 00:00:00 PDT 1994
Welcome to 4.4BSD-Lite!
erase ^H, kill ^U, intr ^C status ^T
Don't login as root, use the su command.
# ps axv
PID STAT TIME SL RE PAGEIN VSZ RSS LIM TSIZ %CPU %MEM COMMAND
35 Ss 0:00.09 0 22 0 244 64 - 196 0.0 0.0 -sh (sh)
37 R+ 0:00.01 0 0 0 200 88 - 144 0.0 0.0 (ps)
1 IWs 0:00.03 22 0 0 172 0 - 116 0.0 0.0 /sbin/init
28 IWs 0:00.00 22 0 0 20 0 - 8 0.0 0.0 update
0 DLs 0:00.01 0 23 0 0 0 - 0 0.0 0.0 (swapper)
2 RL 0:00.09 0 22 0 0 0 - 0 0.4 0.0 (pagedaemon
# halt
qemu: terminating on signal 15 from pid 42456
ubuntu@ubuntu:~/pic32mz$ cat run_wifire.sh
/usr/local/qemu-mips/bin/qemu-system-mipsel -machine pic32mz-wifire \
-nographic \
-monitor none \
-serial vc \
-serial vc \
-serial vc \
-serial stdio \
-bios boot-wifire.hex \
-kernel vmunix.hex \
-sd litebsd.img
ubuntu@ubuntu:~/pic32mz$ The kernel for MEB-II must be different. The one you have was compiled for Wi-Fire:
4.4BSD-Lite build 13 compiled 2015-01-20
sergev@ubuntu-sergev:LiteBSD/sys/compile/WIFIRE.pic32Please try this one: vmunix-meb2.zip
ypwangreg
commented
1 year ago Hi Sergev,
Thanks for the new kernel and Now it works like a charm!
ubuntu@ubuntu:~/pic32mz$ sh run_meb2.sh
Board: Microchip MEB-II
Processor: microAptivP
RAM size: 512 kbytes
Load file: 'vmunix-meb2.hex', 519148 bytes
Card0 image 'litebsd.img', 339969 kbytes
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
4.4BSD-Lite build 0 compiled 2016-04-17
vak@tundra.local:LiteBSD/sys/compile/MEBII.pic32
cpu: PIC32MZ2048ECH144 rev A4, 200 MHz
oscillator: system PLL div 1:6 mult x50
real mem = 512 kbytes
avail mem = 344 kbytes
using 18 buffers containing 73728 bytes of memory
spi1 at pins sdi=RD14/sdo=RB10/sck=RD1
spi2 at pins sdi=RD7/sdo=RG8/sck=RG6
spi4 at pins sdi=RG7/sdo=RB3/sck=RD10
en0 at interrupt 153, MAC address 52:54:00:12:34:56
en0: <SMSC LAN8740A> at address 0
uart1 at pins rx=RA14/tx=RA15, interrupts 112/113/114, console
sd0 at port spi2, pin cs=RB14
gpio0 at portA, pins ii---ii-iiiiiiii
gpio1 at portB, pins ioiiiiiiiiiiiiii
gpio2 at portC, pins iiii-------iiii-
gpio3 at portD, pins iiiiiii-ioiiiiii
gpio4 at portE, pins ------iiiiiiiiii
gpio5 at portF, pins --ii---i--iiiiii
gpio6 at portG, pins iiii--iiii----ii
gpio7 at portH, pins iiiiiiiiiiiiiiio
gpio8 at portJ, pins iiiiiiooiiiiiiii
gpio9 at portK, pins --------iiiiiiii
sd0: type I, size 339968 kbytes, speed 12 Mbit/sec
sd0a: partition type b7, sector 2, size 204800 kbytes
sd0b: partition type b8, sector 409602, size 32768 kbytes
sd0c: partition type b7, sector 475138, size 102400 kbytes
WARNING: preposterous clock chip time -- CHECK AND RESET THE DATE!
Enter pathname of shell or RETURN for sh:
erase ^H, kill ^U, intr ^C status ^T
Don't login as root, use the su command.
# if ifconfig en0 >/dev/null 2>&1; then
>
> ifconfig en0 inet 10.0.2.15
>
> fi
# en0: link up, 100Mbps, full duplex
# ping 10.0.2.2
PING 10.0.2.2 (10.0.2.2): 56 data bytes
64 bytes from 10.0.2.2: icmp_seq=0 ttl=64 time=2.538 ms
64 bytes from 10.0.2.2: icmp_seq=1 ttl=64 time=0.137 ms
^C
--- 10.0.2.2 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 0.137/1.337/2.538 ms
# route add default 10.0.2.2
add net default: gateway 10.0.2.2
# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=115 time=25.861 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=115 time=23.426 msI can also run inetd and telnet to 10.0.2.15 works fine too. The only issue is root fs is read-only otherwise I can add resolv.conf so I can ping google.com.
For the Ubuntu host, I have to run the following command for above network to work
sudo ifconfig tap0 10.0.2.2
sudo sysctl net.ipv4.ip_forward=1
sudo iptables -t nat -A POSTROUTING -o enp0s2 -j MASQUERADE
one minor issue is the ps and vmstat does not work so I might need to build new image for the meb2 as well.
# ps avx
ps: proc size mismatch (6640 total, 656 chunks)
# vmstat
vmstat: undefined symbols: _scsi_dinit it would be also cool if we could have a basic c compiler and linker to work and it is way ahead.
Thanks again and I will close the ticket!
Hi Sergev,
It is very awesome that you created such a qemu variant for PIC32MZ and it is very fun.
I could compile (on ubuntu 22.04) and run much of the demos but not the last one. it stuck in the following
By comparing with other examples, it seems that it might be missing the '-bios boot-meb2.hex' ? I am not sure, could you please share some lights on this? Thanks!
FYI.. for the people who wants to compile on the latest Ubuntu 22.04, please see following note
Cheers, Andy